Kugwiritsa Ntchito Kumata, Mitsubishi, Wopempha, Chigono, Nambala, Taiwan Baomwean, Syntec ndi machitidwe ena.
Mfundo:
Kugwiritsa ntchito ukadaulo wopanda zingwe, opaleshoniyo ndiyosavuta,kulumikizana kwachikhalidwe kasupe kumasiyidwa, Kutha kwa chinsinsi kumachepetsedwa, komanso zovuta monga chingwe chojambulira ndi banga lamafuta amapewedwa.
